I’ve been thinking about the impact of the financial crisis on retirement income policy and individual strategies, and have come up with a reasonably simple way (I hope) to illustrate the core problem. Pre-crisis, it seemed reasonable to base a retirement strategy on the idea that a long-term investor, focusing on stocks could average a 7 per cent real return over 30 years, with relatively little risk. Now it’s clear that assumption has been proved wrong for lots of people. So it seems reasonable to ask how retirement strategy would look if, instead, you assumed a 2 per cent real return (what you might get with a portfolio of government bonds and the safest stocks)...